A building covered in ice sits at the base of the Horseshoe Falls in Niagara Falls, Canada, January 2, 2018. Rmore

Reuters /
2018年 1月 4日 Thursday

A building covered in ice sits at the base of the Horseshoe Falls in Niagara Falls, Canada, January 2, 2018. REUTERS/Aaron Lynett

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People walk in a field of fireweed, or kochia scoparia, at the Hitachi Seaside Park in Hitachinaka, Japan, Octmore

Reuters /
2018年 10月 22日 Monday

People walk in a field of fireweed, or kochia scoparia, at the Hitachi Seaside Park in Hitachinaka, Japan, October 22, 2018. Fireweed is a grass bush that takes on a bright red color in autumn. REUTERS/Toru Hanai

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An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 18, 2018. REUTERS/Lucas Jackson

Reuters /
2018年 9月 21日 Friday

An iceberg floats in a fjord near the town of Tasiilaq, Greenland, June 18, 2018. REUTERS/Lucas Jackson

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The Villarrica Volcano is seen at night from Pucon town, Chile, September 2, 2018. REUTERS/Cristobal Saavedramore

Reuters /
2018年 9月 4日 Tuesday

The Villarrica Volcano is seen at night from Pucon town, Chile, September 2, 2018. REUTERS/Cristobal Saavedra Escobar

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A member of the Sri Lankan coast guard is covered in oil as he works to clean an oil spill on a beach in Uswetmore

Reuters /
2018年 9月 10日 Monday

A member of the Sri Lankan coast guard is covered in oil as he works to clean an oil spill on a beach in Uswetakeiyawa, Sri Lanka, September 10, 2018. REUTERS/Dinuka Liyanawatte

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A whirlwind is seen as elephant and zebras walk through the Amboseli National Park, Kenya, August 19, 2018. Rmore

Reuters /
2018年 8月 20日 Monday

A whirlwind is seen as elephant and zebras walk through the Amboseli National Park, Kenya, August 19, 2018. REUTERS/Baz Ratner

A man walks with his dog through a forest during a foggy morning in Bern, Switzerland, March 4, 2018. REUTERS/more

Reuters /
2018年 3月 5日 Monday

A man walks with his dog through a forest during a foggy morning in Bern, Switzerland, March 4, 2018. REUTERS/Stefan Wermuth

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Floating dead fish are seen near fish farms at the Euphrates River in Mussayab district, Iraq, November 3, 201more

Reuters /
2018年 11月 6日 Tuesday

Floating dead fish are seen near fish farms at the Euphrates River in Mussayab district, Iraq, November 3, 2018. REUTERS/Alaa al-Marjani

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Bioluminescent phytoplankton is seen along the coastal waters at Big Sur, California, February 5, 2018.
Geormore

Reuters /
2018年 2月 9日 Friday

Bioluminescent phytoplankton is seen along the coastal waters at Big Sur, California, February 5, 2018.
George Krieger/via REUTERS

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Lava erupts from a fissure east of the Leilani Estates subdivision during ongoing eruptions of the Kilauea Volmore

Reuters /
2018年 5月 14日 Monday

Lava erupts from a fissure east of the Leilani Estates subdivision during ongoing eruptions of the Kilauea Volcano in Hawaii, May 13, 2018. REUTERS/Terray Sylvester

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The Aurora Borealis (Northern Lights) is seen over the sky near Rovaniemi in Lapland, Finland, October 7, 2018more

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2018年 10月 8日 Monday

The Aurora Borealis (Northern Lights) is seen over the sky near Rovaniemi in Lapland, Finland, October 7, 2018. REUTERS/Alexander Kuznetsov

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The sun rises as spider webs blanket bushes at the banks of Lake Vistonida, Greece, October 19, 2018. REUTERS/more

Reuters /
2018年 10月 19日 Friday

The sun rises as spider webs blanket bushes at the banks of Lake Vistonida, Greece, October 19, 2018. REUTERS/Alexandros Avramidis

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KV Svalbard's crew, formed by Norwegian Navy privates and scientists from the Norwegian Institute of Marine Remore

Reuters /
2018年 3月 28日 Wednesday

KV Svalbard's crew, formed by Norwegian Navy privates and scientists from the Norwegian Institute of Marine Research, play soccer as they are protected from polar bears by armed guards in the arctic environment in the sea around Greenland, March 22, 2018.
Marius Vagenes Villanger/Kystvakten/Sjoforsvaret/NTB Scanpix via REUTERS

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Lightning streaks are seen during a storm over the Auberge de Castille, the office of the Prime Minister Josepmore

Reuters /
2018年 10月 19日 Friday

Lightning streaks are seen during a storm over the Auberge de Castille, the office of the Prime Minister Joseph Muscat, in Valletta, Malta, October 19, 2018. REUTERS/Darrin Zammit Lupi

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A woman poses for a picture outside the Ice Cave at the Rhone Glacier in Furka, Switzerland, September 13, 201more

Reuters /
2018年 9月 13日 Thursday

A woman poses for a picture outside the Ice Cave at the Rhone Glacier in Furka, Switzerland, September 13, 2018. REUTERS/Denis Balibouse

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A full moon rises behind the Temple of Poseidon before a lunar eclipse in Cape Sounion, near Athens, Greece, Jmore

Reuters /
2018年 7月 28日 Saturday

A full moon rises behind the Temple of Poseidon before a lunar eclipse in Cape Sounion, near Athens, Greece, July 27, 2018. REUTERS/Alkis Konstantinidis

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A man uses a torch to walk through a park during cold fog at night in Athboy, Ireland, October 31, 2018. REUTEmore

Reuters /
2018年 11月 1日 Thursday

A man uses a torch to walk through a park during cold fog at night in Athboy, Ireland, October 31, 2018. REUTERS/Clodagh Kilcoyne

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Damage caused by fire from a burning illegal oil well is seen in Ranto Peureulak, Aceh Province, Indonesia, Apmore

Reuters /
2018年 4月 25日 Wednesday

Damage caused by fire from a burning illegal oil well is seen in Ranto Peureulak, Aceh Province, Indonesia, April 25, 2018. Antara Foto/Rahmad/ via REUTERS

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A plastic beach volleyball floats in the Strait of Gibraltar, about 6.8 miles (11 km) from the nearest coast, more

Reuters /
2018年 8月 3日 Friday

A plastic beach volleyball floats in the Strait of Gibraltar, about 6.8 miles (11 km) from the nearest coast, near Barbate, southern Spain, July 31, 2018. REUTERS/Jon Nazca

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A young priest throws a snowball during a heavy snowfall in Saint Peter's Square at the Vatican, February 26, more

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2018年 2月 26日 Monday

A young priest throws a snowball during a heavy snowfall in Saint Peter's Square at the Vatican, February 26, 2018. REUTERS/Max Rossi

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Cows drink water from the Lac d'Hongrin during an ongoing drought near Chateau d'Oex, Switzerland, August 7, 2more

Reuters /
2018年 8月 7日 Tuesday

Cows drink water from the Lac d'Hongrin during an ongoing drought near Chateau d'Oex, Switzerland, August 7, 2018. REUTERS/Denis Balibouse

Farmer Ash Whitney stands in the middle of a dried-up dam in a drought-affected paddock on his property locatemore

Reuters /
2018年 8月 1日 Wednesday

Farmer Ash Whitney stands in the middle of a dried-up dam in a drought-affected paddock on his property located west of the town of Gunnedah in New South Wales, Australia, June 3, 2018. "I have been here all my life, and this drought is feeling like it will be around a while," said Whitney. REUTERS/David Gray

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A cow is seen on land that used to be under water, at the Aculeo Lagoon in Paine, Chile, May 14, 2018. REUTERSmore

Reuters /
2018年 5月 15日 Tuesday

A cow is seen on land that used to be under water, at the Aculeo Lagoon in Paine, Chile, May 14, 2018. REUTERS/Matias Delacroix

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Fields of flowers during the annual blossom in Castelluccio di Norcia near Perugia, Italy, July 12, 2018. REUTmore

Reuters /
2018年 7月 13日 Friday

Fields of flowers during the annual blossom in Castelluccio di Norcia near Perugia, Italy, July 12, 2018. REUTERS/Alessandro Bianchi

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A man swims as he collects recyclable items in the polluted water of the river Yamuna ahead of World Water Daymore

Reuters /
2018年 3月 21日 Wednesday

A man swims as he collects recyclable items in the polluted water of the river Yamuna ahead of World Water Day, in New Delhi, India, March 21, 2018. REUTERS/Adnan Abidi

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Coral surrounds a small island on the Great Barrier Reef, located off the coast of Queensland, near the town omore

Reuters /
2018年 11月 15日 Thursday

Coral surrounds a small island on the Great Barrier Reef, located off the coast of Queensland, near the town of Rockhampton, in Australia, November 15, 2018. REUTERS/David Gray

Young jockeys, local children mostly aged 6 to 13, race camels in the traditional Bedouin sport, even as rights groups said child riders were often injured and some had been abducted or sold by their families.